Physics P1.2

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What is kinetic energy?
Energy in moving objects.
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What is electrical energy?
Energy in moving charges or static electric charges.
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What is elastic potential energy?
Energy in stretched or squashed objects.
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What is chemical energy?
Energy stored in fuel, foods and batteries.
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What is Gravitational potential energy?
Energy stored in raised objects.
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What important fact does the conservation of energy tell us?
Energy can't be created or destroyed.
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What is 'useful energy'?
Is energy transferred to where it's wanted, in the form it's wanted in.
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What is 'wasted energy' and what happens to it?
Energy that's not usefully transferred and it will then be transferred to the surroundings.
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What is the equation for efficiency?
Efficiency = useful energy transferred / total energy supplied (*100)
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Why can't a machine be more than 100% efficient?
Because we can't get more energy than we put in.
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Other cards in this set

Card 2

Front

What is electrical energy?

Back

Energy in moving charges or static electric charges.

Card 3

Front

What is elastic potential energy?

Back

Preview of the front of card 3

Card 4

Front

What is chemical energy?

Back

Preview of the front of card 4

Card 5

Front

What is Gravitational potential energy?

Back

Preview of the front of card 5
View more cards

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